Valhalla Scientific 4300C, Operation Manual

Page: 38 / 84

36
Optional Features and Accessories
The 4300C Micro-Ohmmeter are shipped with a detachable power cord, and an Operation Manual as
standard equipment. This section lists several items that may be desirable for special applications.
Options
GPIB
The Valhalla 4300C comes standard with a RS-232 interface. Also available is an optional GPIB IEEE-488.2
compatible interface. The interface is talk/listen and provides range and ohmmeter function control. Also
refer to
Remote Operations – IEEE Interface .
USB
Another interface that is available is USB. The interface is talk/listen and provides range and ohmmeter
function control. Drivers are provided.
CET
With Option CET, the 4300C comes with a pair of Rear Panel Current Enable Terminals.
The terminal must be shorted for the 4300C to output current.
CET functions as a safety interlock, the terminals can be connected to an e-stop button, safety curtain,
etc. It works like a permission to start the test or interrupt the output of current applied to the device
under test. In certain applications, it can help prevent the equipment from harming its operator or
damaging itself.
Test Current Status CET Current Flow
ON OPEN DISABLED
OFF OPEN DISABLED
ON CLOSE ENABLED
OFF CLOSE DISABLED
The CET Terminal takes over the Rear Panel HLC terminal and therefor, if the CET option is installed, the
Rear Panel HLC terminal are no longer connected to the Hi-Lo comparator relay circuit and cannot be used
for that purpose.